What time does it start to cool down in Xiayi?

The temperature in Xiayi starts to cool down after three o’clock in the afternoon.

Because in sunny or cloudy weather, the temperature continues to rise at noon, reaches the highest value at around 1 p.m., and begins to cool down after 3 p.m. So the temperature in Xiayi starts to cool down after three o'clock in the afternoon.

Xiayi was one of the many capitals of the Xia Dynasty. The Xia Dynasty was the earliest dynasty in China that existed as a state. The Xia Dynasty was a dynasty established by Xia Qi, the son of Dayu.